Syncretism (ˈsɪŋkɹətɪzəm,_ˈsɪn-) is the practice of combining different beliefs and various schools of thought. Syncretism involves the merging or assimilation of several originally discrete traditions, especially in the theology and mythology of religion, thus asserting an underlying unity and allowing for an inclusive approach to other faiths. Syncretism also occurs commonly in expressions of art and culture, known as eclecticism, as well as in politics, known as syncretic politics. The English word is first attested in the early 17th century It is from Modern Latin syncretismus, drawing on the synkretismos, supposedly meaning "Cretan federation"; however, this is a spurious etymology from the naive idea in Plutarch's 1st-century AD essay on "Fraternal Love (Peri Philadelphias)" in his collection Moralia. He cites the example of the Cretans, who compromised and reconciled their differences and came together in alliance when faced with external dangers. "And that is their so-called Syncretism [Union of Cretans]". More likely as an etymology is sun- ("with") plus kerannumi ("mix") and its related noun, "krasis," "mixture." Overt syncretism in folk belief may show cultural acceptance of an alien or previous tradition, but the "other" cult may survive or infiltrate without authorized syncresis. For example, some conversos developed a sort of cult for martyr-victims of the Spanish Inquisition, thus incorporating elements of Catholicism while resisting it. The Kushite kings who ruled Upper Egypt for approximately a century and the whole of Egypt for approximately 57 years, from 721 to 664 BCE, constituting the Twenty-fifth Dynasty in Manetho's Aegyptiaca, developed a syncretic worship identifying their own god Dedun with the Egyptian Osiris. They maintained that worship even after they had been driven out of Egypt. A temple dedicated to this syncretic god, built by the Kushite ruler Atlanersa, was unearthed at Jebel Barkal.